.data
.text
.globl main
main:
li  $s0, 1
li  $t0, 1
sub $s0, $s0, $t0
li  $t0, -1
mul $t0, $s0, $t0
sw  $t0, 0($sp)
li  $v0, 1
la  $a0, 0($t0)
syscall